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參數(shù)資料
| 型號： | MAX97003EWP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 15/48頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AUDIO SUBSYSTEM LN 20WLP |
| 標準包裝： | 2,500 |
| 類型： | D 類；H 類 |
| 輸出類型： | 1-通道（單聲道）或 2-通道（立體聲） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 1W x 2 @ 8 歐姆 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 特點： | 消除爆音，差分輸入，關閉 |
| 安裝類型： | * |
| 供應商設備封裝： | * |
| 封裝/外殼： | * |
| 包裝： | * |
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Maxim Integrated Products 22
MAX97003
High-Efficiency, Low-Noise Audio Subsystem
Detailed Description
The MAX97003 audio subsystem combines a mono
speaker amplifier with a stereo headphone amplifier. The
high-efficiency 1W class D speaker amplifier operates
directly from a lithium-ion battery and consumes no more
than 0.05FA when in shutdown mode. The headphone
amplifier utilizes a dual-mode charge pump and a Class
H output stage to maximize efficiency while outputting a
ground-referenced signal that does not require output
coupling capacitors. The headphone and speaker ampli-
fiers have independent volume and on/off control. The
four inputs are configurable as two differential inputs or
four single-ended inputs. All control is performed using
the two-wire I2C interface.
The speaker amplifier incorporates a distortion limiter to
automatically reduce the volume level when excessive
clipping occurs. This allows high gain for low-level sig-
nals without compromising the quality of large signals.
The speaker amplifier also features an adjustable DRC
that provides programmable compression or limiting
of the audio signal. Both the headphone and speaker
amplifiers feature a downward expander/noise gate to
attenuate noise when no input signal is present. The
headphone amplifier features a ground-sense pin to
eliminate ground loop noise when the headphone jack
is in use.
Signal Path
The signal path consists of flexible inputs, signal mixing,
volume control, and output amplifiers (Figure 1). The
inputs can be configured for single-ended or differen-
tial signals (Figure 2). The internal preamplifiers feature
programmable gain settings using internal resistors.
Following preamplification, the input signals are mixed,
volume adjusted, and routed to the headphone and
speaker amplifiers based on the desired configuration.
Class D Speaker Amplifier
The Class D speaker amplifier utilizes active emissions-
limiting and spread-spectrum modulation to minimize the
EMI radiated by the amplifier.
Figure 1. Signal Path
-63dB TO 0dB
MIXER
AND
MUX
INA2
INA1
INB2
INB1
0dB TO +6dB
HPL
HPR
SPKP
SPKN
-63dB TO 0dB0dB TO +6dB
-63dB TO 0dB+12dB TO +24dB
INPUT A
-3dB TO +12dB
INPUT B
-3dB TO +12dB
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9700AEBC | 制造商:Maxim Integrated Products 功能描述:1.2W LOW EMI FILTERLESS CLASS D - Rail/Tube |
| MAX9700AEBC+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 1.6W CLS-D 12UCSP - Rail/Tube |
| MAX9700AEBC+T | 功能描述:音頻放大器 1.2W L-EMI Filterles Class D Audio Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9700AEBC-T | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9700AETB | 制造商:Maxim Integrated Products 功能描述:1.2W, LOW EMI, FILTERLESS, CLASS D AUDIO AMPL - Rail/Tube |
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